Channel Manager with PMS & POS

I want to bring to life a cloud-based platform that unifies three core functions a modern accommodation business needs: a real-time channel manager, a full property-management system, and an on-site POS, all knitted together through a third-party API... (Budget: $30 - $250 USD, Jobs: API Development, Cloud Computing, HTML, Node.js, PHP, Software Architecture, Web Development, Website Design)